A030841 a(n) = floor( exp(19/21)*n! ).

2, 4, 14, 59, 296, 1779, 12455, 99644, 896801, 8968011, 98648121, 1183777460, 15389106991, 215447497884, 3231712468264, 51707399492232, 879025791367949, 15822464244623086, 300626820647838642, 6012536412956772858

Offset

1,1

Links

Table of n, a(n) for n=1..20.

Mathematica

Floor[Exp[19/21]Range[20]!] (* Harvey P. Dale, Jun 28 2021 *)

Crossrefs

Sequence in context: A030861 A122972 A030948 * A030938 A030808 A047009

Adjacent sequences: A030838 A030839 A030840 * A030842 A030843 A030844

Keyword

nonn

Author

Simon Plouffe

Status

approved